C01B 2203/1252
Cyclic or aromatic hydrocarbons
C01B2203/1252 (Cyclic or aromatic hydrocarbons) appears on 75 US grants and 124 published applications in this corpus.
Search patents in C01B- Granted patents
- 75
- Published applications
- 124
- Assignees
- 81
- Inventors
- 334
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 11 |
| 2008 | 1 | 15 |
| 2009 | 2 | 8 |
| 2010 | 11 | 10 |
| 2011 | 9 | 6 |
| 2012 | 3 | 5 |
| 2013 | 3 | 5 |
| 2014 | 1 | 1 |
| 2015 | 7 | 4 |
| 2016 | 3 | 5 |
| 2017 | 2 | 6 |
| 2018 | 6 | 9 |
| 2019 | 3 | 1 |
| 2020 | 4 | 1 |
| 2021 | 3 | 2 |
| 2022 | 2 | 3 |
| 2023 | 2 | 14 |
| 2024 | 1 | 4 |
| 2025 | 1 | 4 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen storage by means of liquid organic compounds31 Mar 2026US 12,589,992 B2Arkema France
- Process to hydrothermally produce gases from residue streams using a series of reactors24 Mar 2026US 12,583,745 B2
- Uniform-type platinum-loaded alumina catalyst, method of producing same, and method of using same10 Mar 2026US 12,569,834 B2Chiyoda Corporation
- Compositions and methods of using fine mineral matter as a catalyst for chemical recycling27 Jan 2026US 12,534,365 B2Radical Plastics, Inc.
- Systems and methods for production, storage, and transportation of hydrogen28 Jan 2025US 12,209,018 B2Chevron U.S.A.Inc.
- Hydrogen supply system and method for operating same20 Aug 2026US 2026/0242216 A1Chiyoda Corporation
- Process to Hydrothermally Produce Gases From Residue Streams Using a Series of Reactors25 Jun 2026US 2026/0176135 A1Saudi Arabian Oil Company
- Zeolite composite catalyst and method for hydrocracking cyclic compound having five-membered ring structure using same25 Jun 2026US 2026/0176536 A1Chiyoda Corporation
- Multistage catalytic reaction system for simultaneous conversion of hydrocarbons of various carbon numbers9 Apr 2026US 2026/0097376 A1Korea Institute of Energy Research
- Process of controlling provision of a hydrogen stream5 Mar 2026US 2026/0062363 A1Uop LLC
Most cited
By later US patents
- Natural gas steam reforming method with linear countercurrent heat exchanger95US 7,931,712 B2Pioneer Energy, Inc. · 2011
- Method of starting fuel cell power generation system91US 4,820,594 AHitachi, Ltd. · 1989
- Compact natural gas steam reformer with linear countercurrent heat exchanger82US 7,918,906 B2Pioneer Energy, Inc. · 2011
- Process for production of elemental iron82US 7,931,731 B2Shell Oil Company · 2011
- Methods for producing synthesis gas50US 7,722,690 B2Kellogg Brown & Root LLC · 2010